Addressing the Link Between Marijuana and Mental Illness.

A recent study linking heavy marijuana use to schizophrenia raises concerns about the safety of legalizing recreational marijuana. While the study does not establish a specific cause-and-effect process, it does show a statistical correlation between heavy cannabis use and subsequent schizophrenia diagnosis. Caution and skepticism are warranted when it comes to claims that marijuana is harmless. The connection between marijuana and serious mental health problems has been reported and studied for over 100 years. The most serious research suggests grave and long-term dangers, and spreading addiction and self-destruction are now visible in New York and across America.